diff options
Diffstat (limited to 'package/libs/libubox/patches/0015-blobmsg_json-prefer-snprintf-usage.patch')
| -rw-r--r-- | package/libs/libubox/patches/0015-blobmsg_json-prefer-snprintf-usage.patch | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/package/libs/libubox/patches/0015-blobmsg_json-prefer-snprintf-usage.patch b/package/libs/libubox/patches/0015-blobmsg_json-prefer-snprintf-usage.patch new file mode 100644 index 0000000000..d5709a6e4f --- /dev/null +++ b/package/libs/libubox/patches/0015-blobmsg_json-prefer-snprintf-usage.patch @@ -0,0 +1,66 @@ +From 0e330ec3662795aea42ac36ecf7a9f32a249c36d Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Petr=20=C5=A0tetiar?= <ynezz@true.cz> +Date: Tue, 14 Jan 2020 09:05:02 +0100 +Subject: blobmsg_json: prefer snprintf usage +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Better safe than sorry and while at it prefer use of PRId16 and PRId32 +formatting constants as well. + +Reviewed-by: Jo-Philipp Wich <jo@mein.io> +Signed-off-by: Petr Štetiar <ynezz@true.cz> +--- + blobmsg_json.c | 16 ++++++++-------- + 1 file changed, 8 insertions(+), 8 deletions(-) + +--- a/blobmsg_json.c ++++ b/blobmsg_json.c +@@ -203,7 +203,7 @@ static void blobmsg_format_string(struct + buf[1] = escape; + + if (escape == 'u') { +- sprintf(buf + 4, "%02x", (unsigned char) *p); ++ snprintf(buf + 4, sizeof(buf) - 4, "%02x", (unsigned char) *p); + len = 6; + } else { + len = 2; +@@ -220,7 +220,7 @@ static void blobmsg_format_json_list(str + static void blobmsg_format_element(struct strbuf *s, struct blob_attr *attr, bool without_name, bool head) + { + const char *data_str; +- char buf[32]; ++ char buf[317]; + void *data; + int len; + +@@ -244,22 +244,22 @@ static void blobmsg_format_element(struc + data_str = buf; + switch(blob_id(attr)) { + case BLOBMSG_TYPE_UNSPEC: +- sprintf(buf, "null"); ++ snprintf(buf, sizeof(buf), "null"); + break; + case BLOBMSG_TYPE_BOOL: +- sprintf(buf, "%s", *(uint8_t *)data ? "true" : "false"); ++ snprintf(buf, sizeof(buf), "%s", *(uint8_t *)data ? "true" : "false"); + break; + case BLOBMSG_TYPE_INT16: +- sprintf(buf, "%d", (int16_t) be16_to_cpu(*(uint16_t *)data)); ++ snprintf(buf, sizeof(buf), "%" PRId16, (int16_t) be16_to_cpu(*(uint16_t *)data)); + break; + case BLOBMSG_TYPE_INT32: +- sprintf(buf, "%d", (int32_t) be32_to_cpu(*(uint32_t *)data)); ++ snprintf(buf, sizeof(buf), "%" PRId32, (int32_t) be32_to_cpu(*(uint32_t *)data)); + break; + case BLOBMSG_TYPE_INT64: +- sprintf(buf, "%" PRId64, (int64_t) be64_to_cpu(*(uint64_t *)data)); ++ snprintf(buf, sizeof(buf), "%" PRId64, (int64_t) be64_to_cpu(*(uint64_t *)data)); + break; + case BLOBMSG_TYPE_DOUBLE: +- sprintf(buf, "%lf", blobmsg_get_double(attr)); ++ snprintf(buf, sizeof(buf), "%lf", blobmsg_get_double(attr)); + break; + case BLOBMSG_TYPE_STRING: + blobmsg_format_string(s, data); |